Welcome to PCSWMM, the spatial decision support system for EPA SWMM5 stormwater management, wastewater and watershed modeling - now celebrating 25 years of providing innovative modeling techniques to the engineering community.

PCSWMM 2011 incorporates a modern, powerful GIS engine that works seamlessly with the latest GIS data formats, and provides intelligent tools for streamlining model development, optimization and analysis in a comprehensive range of applications.

With full support for the latest, fully dynamic US EPA SWMM5 hydrology/hydraulics engine, PCSWMM provides a scalable (unlimited model sizes), and complete array of stormwater management, wastewater and watershed system modeling tools.

Flexible, smart GIS engine

ALT=PCSWMM is the most powerful urban drainage modeling application for working with GIS/CAD based data. PCSWMM enables both engineers and GIS professionals to work on the same data, improving workflow and collaboration. PCSWMM supports the leading open standard and proprietary GIS and CAD formats, including ArcGIS, Geomedia SQL, MapInfo, Microstation, AutoCAD, GML, OpenGIS SQL, KML and many others (over 30 vector and raster formats supported), giving you the option to work with whichever file formats are required, greatly increasing the flexibility of both your model building and analysis toolset.

ALT=PCSWMM's high-performance, scalable GIS engine provides powerful GIS analysis and hydraulic modeling in a single stand-alone environment, with no other third-party licenses required. You can create, edit, modify, run, map, analyze, design and optimize your GIS based sewer network models and instantly review, query and display simulation results either from within the optimized PCSWMM interface or from within Google Earth, ArcGIS, or the GIS of your choice – its up to you.